84078733 has 4 divisors (see below), whose sum is σ = 84398688. Its totient is φ = 83758780.

The previous prime is 84078721. The next prime is 84078739. The reversal of 84078733 is 33787048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84078733 - 2²⁵ = 50524301 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84078739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159583 + ... + 160108.

It is an arithmetic number, because the mean of its divisors is an integer number (21099672).

Almost surely, 2^84078733 is an apocalyptic number.

It is an amenable number.

84078733 is a deficient number, since it is larger than the sum of its proper divisors (319955).

84078733 is a wasteful number, since it uses less digits than its factorization.

84078733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319954.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 84078733 is about 9169.4456211922. The cubic root of 84078733 is about 438.0887016895.

The spelling of 84078733 in words is "eighty-four million, seventy-eight thousand, seven hundred thirty-three".